Eyes are a very sensitive part of the human body. Do you feel ophthalmologists should focus only on surgeries and let optometrists do all the eye exams or should they continue to do both? Why?​

Asubstitute is standing at the halfway line waiting to enter the match at the next stoppage of play the ball has gone over the touchline for throwing and referee allows for the substitution to substitute wants to take the throw-in does the substitute first have to enter the field of play before being allowed to take the throw-in